Teacher education is a comprehensive process that aims to prepare and equip teachers with the knowledge, attitudes, behaviours, and skills needed to be effective in classrooms, schools, and the wider community. The process involves a range of policies, procedures, and programmes designed to help teachers develop expertise in their subject areas, understand the learning needs of their students, and engage with the diverse social, cultural, and economic contexts of their communities. The contemporary meaning of teacher education goes beyond pre-service training; it now includes in-service learning, continuous professional development, mentoring, technology-enabled learning, and quality assurance. This paper examines teacher education as an ecosystem rather than as a single programme or institution. It argues that national bodies such as UGC, NCERT, NCTE, SCERTs, and DIETs provide the structural and academic foundation of teacher education, while schemes and other initiatives such as SSA, RMSA, Samagra Shiksha, PMMMNMTT, DIKSHA, NISHTHA, and the National Mission for Mentoring operationalize it at large scale. The present paper reviews and analyses secondary data including official policy documents, institutional sources, and published literature. The findings of the paper show that teacher education in India has moved from fragmented training events to a more coherent architecture of preparation, regulation, mentoring, digital learning, and standards-based professional development. It concludes that the central challenge, therefore, is no longer only the expansion of teacher education opportunities, but the effective alignment of institutions, schemes, and professional learning processes with classroom practice, so that teacher education can contribute meaningfully to improved teaching quality and, ultimately, better learning experiences and outcomes for students.